Paper-feeding machine.



y O PAPER FEBDING MACHINE.

APPLICATION FILED MAR.22,1`907.

6 SHEETS- SHEETL N in@ @Ui/knew@ auvents@ ation-1 A A IN MEZ1 mi A TMM

BNB

DIH

E mm TRM Em Pm ADP PA um 9 1H o OO 0U m N 6 SHEETS-SHEET 2.

ses

1%', Wig? PATBNTED. PEB. 2.5 l1908. T. 0; DEXTER. MEER. EBEE/ING. MACHINE.

APPLGATON FILED MAR. 22.19.07.

e SHEETS-SHEET s.

lV/Lb een@ l (M-vanto@ f @Mmm-ref @wi/kwamen l T. c. DEXTER.

PAPER EEEDING MACHINE.

APPLICATION FILED MAR. 22.1907.

6 SHEETS-SHEET 4.

PATBNTED PEB. 25, 1908.

nw. ,0 9 .l nw 2 R E F D E T N E T P Ev. mm H2. ,G2 mi s A T.MH KGB. ENE I mmm UEM T T wm I Pn n 0 8 8. E

6 SHEETS-SHEET 5.

. PATBNTBD 111113.25 19o8 T. c. DBXTLR.V

PAPER PEEDING MACHINE. APPLIoATIoN FILED 11.111.22.190?. 6 BHEETB SEEET 6.

C72/@duemila UNITED sTATEs PATENT oEEroE.

TALBOT c. DEXTER, or PEARL nii/EE, NEW YORK.

PAPER-FEEDING MACHINE.

Specification of Letters v'Pai'.ent.

resented Feb. 25,1908..

Application tiled March 22. 1907. Serial No. 363.796.

To all lwhom it may-concern: v

Be it known that'I, TALBOT C. Dr: erna, a citizen of the United States, and a rei ident of Pearl River, in the county of Rockband and State of .Yew York, have invented certain new and useful Improvementsl in Paper- Feeding Machines of Wliich-the following is a specification;

My present invention relates to improvelments in paper feeding machines of the sheet-combing type, in which the pile of sheets is acted iipon by combing-feeding devices which comb or feather out the top sheets of the pile to gradually separatethe successive sheets near the top, so they may be drawn from the pile periodically and-fed to any machine arranged'to operate lupon the individual sheets.

My present invention relates to improvements in the sheet actuated mechanism for controlling'sthe operation ofthe sheet feeding mechanisms to automatically register the successive sheets 1n the machine as they are fed forward upon the pile.

My present improvements are of the pneumatic type in which the control of the sheet moving mechanisms is effected through the medium of air suc-tion devices acting beneath the path of the sheets so as to entirely relieve the sheets from the objectionable engagement' of trip fingers or similar devices which are commonly arranged above the path of the sheets, and are objectionable because of their 4interference with the free movement of the sheets from the pile;

)Iy present improvements Will be best understood as applied to a paper feeding machine of the type illustrated in Let-ters Patent,

No. 829854, granted to me August 28th, 1906, and in my applications Serial No.

y 329,898, filed August 9th,v 1906, and Serial No. 360,000, filed March 1st, 1907.. I have illustrated my present improvements as applied to this type of feeding machine, but i-t Will, of course, be vunderstood that I do not intend to linit the scope of the claims upon my present invention to this particular type of feeding machine, but Wish to cover .the`

said invention in a broad sense Without reference tothe particular structure ofthe feeding machine' to which it is applied.

As in my former machines above referred to, my. resent improvements control the action of) the sheet moving mechanisms by actuating suitable devices for raising the sheet moving mechanisms out of engagement With the sheets. This is accomplished through the medium ofa two part clutch mechanism and a controlling pawl, as in my former machines, by arranging theI controlling pawl under the .influence of pneumatic devices Which are controlled by the sheets. In the preferred arrangement of the improved mechanism, I provide two suctionv tubes or nozzles beneath the plane of travel of the sheets upon opposite sides of the central vlongitudinal line of the machine, and connect these suction nozzles through suitable pipes With small cylinders in Which operate pistons connected directly with the controlling pawls of the clutch mechan-A isms.

These pistons are normally held by means of delicate s rings in position to maintain the contro ing pawls out of engagement with the ratchets of the clutch mechanisms during the time that the sheet moving mechanisms are acting. The moment the sheet reaches registered position' above the' suctionl nozzles, thesucticn through the pipes leading from the nozzles to the'cylinders is cut off by the sheet and the suction action causes the pistons tomove.'

operation of the controlling ,pawls of suchl clutch mechanisms by the sheet'controlled suction devices; Whereas in the 'machine of my said application Serial No. 360,000, such clutch mechanisms are omitted, and the sheet controlled suction devices are directly connected with the restraining means of the comber elevating mechanisms. 1

Hy present invention also includes means actuated by the suction devices for preventing the operation of the drop roller delivery mechanism in the absence of a properlyl registere'dl sheet; also certain features 'of general The suction cylinders are conleo l construction bywhich the mainfeatures are gitudinal sectional view of the main parts of a paper feeding machine embodying my invention. Fig. 2 is a front elevation, partly broken away, Fi 1.. F 3 is a detail vertical longitudina sectional elevation of parts of the same mechanism, showing more particularly the pneumatic control and* lowering mechanism of my im roved machine.-V Figs. 4, 5 and 6 are detai views .of the sheet controlling suction nozzle, and the front guide which coperates therewith. Fi 7 is a detail elevation of the sheet con* tro led clutch mechanism which actuates the comber elevating mechanism.

ll and 12 are detail views of the main con Figs. 8, 9, 10,

trolling valve of the suction pipe. Fi 18 is a sectional view illustrating the relie valve of the suction pipe` Fig. 14 Ais a detail longitudinal sectional matic cylinder and piston for controlling the lposition of the clutch pawl and comber controlling latch. Fig. 15 is a view similar to Fig. 7 showing the application of a simple device for disengaging the controlling pawl from the ratchet of the clutch mechanism. Fig. 16 is a side elevation of the same-nicchanism, and 'Fi 17 is a-transverse sectional view looking rom the oppositefside'of the 'same mechanism.

vSheet combing feeding machines of the" type to which my present invention relates are provided with two sets of sheet combing devices arranged to o erate at opposite sides of the machine. n the accompanying drawings, I have shown only one half of the machine including only one of these sheet combing devices, but 1t will be understood that two combing devices of the same con#- struction are em loyed, each being independently contro led by a sheetactuated pneumatic mechanism.

The frame-work of my improvedmachine may be of any suitable construction to properly support ,the Working parts hereinafter referred to. In the drawings, 1, 1, represent the-vertical side frames, These side frames are suitably braced to make them rigid by means of stay rods 2, 3, and other vframe parts' not shown, and within the ame is provided a suitable table or support for carrying a pile of sheets, indicated by the 'reference letter l. At the front of the pilev of sheets, I provide a series -of vertical guide rods or strips (not shown) forconiining the pile.y

5 is a constantly driven shaft bearing the of the comber elevating view showing the pneulower feed rollers 6, said shaft 5 being braced at intervals by suitable bearing brackets, (not shown).

` 8 vare Idrop rollers journaled in the bifur-V cated rock armsjQ, mounted upon the transverse rock shaft 1 0.- T-he rocfshaft l0 extends transversely ofthe machine, above'the constantly rumiing lower/shaft v 5, and is suitably .braced'between its' ends by two-or more bracket armsy llrigidly secured to the auxiliary longitudinal'frame p1eces12. The rock shaft 1 0 is operated bythe usual mech# anism, whereby the series of drop 'rollers 8' are periodically raised forming their function.

21' and 22 are respectively the under feed roller' and drop-roller of sa folding machine to which the .feeder is to pass the sheets.

The vmain cam shaft 20 extends transversely of the machine-and is suitably journaled in the main side frames 1 and the .auxiliary longitudinal frame pieces 12. This shaft A20 is provided with a driving pulley 25, as shown, orit may be driven in any other suitable manner, said shaft being Ithe shaft from which all other parts of the machine are driven.

'The cam shaft 2O carries a large gear 26,

Which-mesheswith a smaller gear 27, secured to a larger gear 28, journaled upon a stud 29, projecting from the side frame of the machine. The gear 28 mesheswithand drives ya smaller gear 30,j'ournaled upon a stud 31, projecting from the side frame of the 10Q machine, and this gear 30, in turn' drives a smaller gear (not shown) keyed to the prolecting endy of the comber driving shaft 3,5 ereinafter referred to, and a smaller gear 33 keyed to the projecting end of the constantly rotating feed shaft 5 above referred to.

40 is one of a pair of combing wheels. Each'ofthese combing wheels' is freel journaled lat 41 upon a rook arm 42, vwliiich is. freely journaled upon a sleevel 50 which is in turn' journaled upon the shaft 35. This shaft 35 (driven as stated) has keyed `to it-a gear 45 which meshes with a gear 46 secured to the combing Wheel 40, by Which the combing wheel is' constantly rotated. Projecting from one face of the combersupporting rock arm 42'is an integral lug 43 in which 'is mounted -an adjustable-'tappet screw 44. Secured upon the sleeve 50 to one side of the rock arm42 is a rock arm 5l which is provided with a`- finger 52, which projects beneath the tappet screw 44 just referred. to, and by its engagement therewith liftsy the combing Wheel away from the pile. By adjusting the screw,44, the limits of rise and fall of the combing wheel can be fixed.

The rock armv 51 is moved in onedireotion for lifting the combing wheel by a spring mechanism whichV is released by the sheet actuated tripping device hereinafter explained. The rock arm 51 is moved in the opposite direction to allow the combing l wheel to move bygravity into engagement -pivotally connected a pitman 56, formed with a yoke-shaped upper end, which straddles the shaft- 20. The shaft carries a eripheral cam 5S, which engages an .antifriction roller journaled upon the pitman 56,

'thev spring controlled lat'ching mechanisrn whereby the roc-k arm 55, sleeve 50, and finger'52 are moved once in each revolution of the shaft 2() to reset the tri ping mechanlsm .(hereinaft-er described) an allow the comb.-

ing wheel to rest upon the pile. v

kThe rock arm 51 projects forwardly from the 'sleeve 50 and has pivotally connected to its forward end a yoke-shaped latching bar @O extending vertically and formed at its upper end with a contracted guide-bar portion Ya which rides in a socket formed 1n a. bracket 62 extending laterally from one of the central auxiliary frames 12. Pivoted at 63a yin the upper end of theloop of theY yoke-shaped latc ing bar 60, is a toggle link 63 which is pivotally connected at its lower Abifurcated end, by pivot pin 64a, with the.

upper vbifurca-ted end of the lower toggle lin 64. mounted at its lower end upon a pivot pin 64b between ears 65a extending from an angular bracket arm 65 whichy is secured to one of the frame pieces 12. The ears 65a project within the loop of latching bar 60, so as to support the lower endv of the lower toggle link therein and maintain the thrust of the toggle in line with bar 60. The purpose of the latching bar 60 and toggle links 63, 64. is to retain the rock arm 51 and the spring device connected thereto, (presently tovbe referred to), in position to combing wheel. 66 is an antifriction roller journaled upon pin 64a.

l will now proceed to describe the spring device and will afterwards explain the mechanism for releasing the latching mechanism underthe control of the sheets fed from the ile. p A rod 70 is pivoted at 71 to the rock arm 51 and projects therefrom vertically through a guide pin 72 projecting from the bracket 62. .urrounding the rod'TO and confined between a collar 70"* above the rock'arm 51 and guide pin T2 is'an expansion'spring 75,` which tends to throw down the arm 51 land move up the finger 52 for raising the comber away from the pile of'sheets. This spring tendency is normally restrained by the togglo links 63, 64 and the latching bar 60.

Turning now to the sheet actuated pneumatic tripping` mechanism for controlling tle opvration of the combing devices, l will fir t rider to theclutch mechani'sm'which trips The toggle link 6e is pivotally` allow the operation of the under the action of 'he sheet actuated tripper, then the means for operating the mechanism and finally the structure and operation of the sheet controlled suction devices.

Each of the auxiliary frame pieces 12 carries a vertical bracket plate 81, upon which are mounted the sectional clutch shaft, and the operating rack, hereinafter referred to.

Bracket arms 90' are secured to and project rearwardly from the plate S1 in positionto of members 91 and 92, illustrated in detail in Figs. 7v 15 and 1T of the drawings. The clutch shaft members 91 and 92 are of hollow or tubular forni. as shown in Fig. 17, each one being suitably journaled in one of the arms of thebracket 90. The shaft member Q1, in addition to being movable about its its bearing 90. This member 91 `has mounted upon it or formed integral with it, a gear wheel 9.3 driven by a rack (hereinafter referred to) to cause it`to oscillate, or by some rotary gear, when it is desired tocause it to clutch mechanism will operate with either an oscillatory or a rotary movement.. Clutch member 9'1 also carries one member 94 of a 'face with a p urality of radial cam faced recesses 94a. The other tubular shaft member` 92 has mounted upon oneend or formed integral therewith a ratchet wheel 95, and upon its opposite or inner end the other member 96 the machine and approximately in line with links F13- 64, the toggle links extending across the line o f the hollow sectional shaft, so that any longitudinal movement of the .shaft section 91 toward the toggle levers, will engage roller 66 and force the knuckle of the toggle levers outwardly, thereby break-A ing the toggle latch and allowing the spring from the pile of sheets. This movement of thel shaft sectlon 91 is effected byarresting accomplished through the medium of the sheetactuated` pneumatic or suction tripping devices hereinafter referred to.

i r vThe vertical bracket plate 81carrl1es at its rotate continuously in one direction. This of the slip clutch, formed upon its Working'.

the knuckle joint connecting the togglel actuated rod .170 to raise the combing wheel the rotation of the shaft sec-tion 92 which is]v 75 support thesect-ional clutch shaft consistmg axis is capable -of moving 'longitudinally in cam faced sli clutch formed in its working f that the ratchet wheel 95 will be ostional clutch shaft 914-92 transversely lof a suction cylinder 147, mounted upon thev lower end a rearwardly projecting dovetail track bar 1.10, upon which is mounted a horizontally reciprocating carriage 111, having secured to its upperedge a' rack bar 1'12,

which is in constant mesh with' the gear wheel 93 upon shaft member 91. The carria-ge 111 is .constantly reciprocated forwardly and backwardlvfby means of aroclr arm 1 15 depending from a rock shaft 1 16, and. pivoted at its lower en d to a link 117, which linkhas pivotal connection 118 with a lug upon the carriage .111.

Thel rock lshaft 116 is suitably iournaled in the machine frame, and extends from side to side of the machine. This rock shaft 116 carries at .itsouter end a depending rocky arm 121 pivoted at its'lower end 122 to a link 123 which is actuated acam or crank mechanism 130 o n shaft 20.- The sectional clutch shaft 91,l 92,` may, if preferred, be rotated. constantly in one direction by suit able gearing meshing with gear 93.

Each sectional clutch mechanism 91, 92, is v under the control of a pneumatic sheetacted tripping device including a pawl 140 journaled at 141 in position to engage one of the ratchet wheels 95, as shown'in Fig. 3 of the drawings. Each pawl 140 is connected Vthrough a'p1tman145 with a hollow piston 146 iaving spring 146a operating'freely in bracket arm 148. The cylinder 147 has open communication at 149 with an elbow' pipe150 connected with a vertical air pipe 151 leading from the valve casing A152. LEX- tending laterally from the vertical air pipe 151 is a branch air pipe 153 leading to one.-

side of the machine, and lthen downwardly beneath the plane-of feed, andthen toward 40 the center of the machine where its endis formed into a-ilattened and broadened' suction nozzle 155 closed at' its end and formed with a plurality ofl small orilices 155a in its upper face, as shown' in Fig, A4.- This liattened-perforated end of the air tube is extended vfor a short distance horizontally'in the plane of feed so vas to'prese'nt the seriesof orifices 155a in aline at right angles to the line of feed, which line is theline of registry preparatory to their delivery from of' sheets the machine.

The valve casing 152,.shown 1n detail 1n FigsS, 10 and 11,'has a'free. passage.vayl` through it vertically, and an air exhaustport 1523; through one side wall. Rotatably mounted in the 'valve casing 152 is a transverse three-way valve plug `160, of hollow formation. This'valve plug 160 is provi-ded vwith-tbe three ports 160a,"160b. and 16.00.

Secured to the outer'end of the valveplug is a rock arm 161,'to which isl pivotally con? nected a 'rod or pitman 162 pivoted at lts -lower end to an arm 163 secured toand projecting'from the journal end ol rock arm l42 upon which the combing wheel 40 is mounted.

vmore 'ullyfexplained.

The valve -casi-ng 152 communicates.

scribed elements.

By this arrangement it will be observed thatl the elevat'idn and lowering of the combing wheel will operate the three-way valve for 4opening up communication through the valve casing when the combing wheel is in operative engagement with the pile, andfor closing oil this direc-t communication from t e valve casing when the combing wheel is elevated. This operation vwill .be hereinafter' through a short pipe-section 165with a threeway coupling 166. lieadingfrom one end of the coupling 166 is a-.pipe'167, which is.

coupled to an air pump ofany'suitablev construction,l not shown. v.The purpose of the air `pump is to constantly" exhaust air through the system of pi e above described,

the action of the air in t e operation ofi the machine being controlled by the 'suction .nozi zles 1155 and the main controlling valves 152. Leadingffrom the other end of coupling 166 is a pipe168 provided in'its ends with a suc.

tion relief valve 1 69 of ordinary construction.

This reliefvalve, as shown in Fig X 1 3 ofthe drawings, consists 'of a conical valve stem seated in a conically recessed plug and having a spring Yto normally hold the valvegclosed,

and suitable guides inwhich the valve stem.

.each system, in which case each system 'will consist 'essentiallyfof'all of the'above l'de- As pointed out in my above-.named application. Serial No. 360,000, the suction noz'-y Zles 155 arranged-in theline of registry of the sheets being fed from thepile is ordinarily a sufficient provision for the proper positioninggoi the sheets 'preparatory to the opera-- tion of the drop'roller'mechanism. Insome addition to the .suction tubes, some form of front gages to further insure the proper registry vof' the sheets. l have illustrated a -form of front guides which may be usedlforl thispurpOSe, but lwould have it understood that l do not limit the use of the sheet con-l trolled suction mechanism to machines having .front '.uides, since the suction mechanismv may eused without such additional registering'mea-ns.' v

175'are' ordinary frontguides `or fingers jmounted uponrock shafts 176 and formed with biu'rcated -downturne'd gage flanges 1753, through. which Aproject the spring iinloo v cases, however 'it isv desirable to' provide, in"

D gers 177 adjustably` secured to the' lfront ,arrest of operation i, which happens only fed forward into registered position),

guides. These front guides 175 are arranged to position the sheets above the suction nozzles 155, the spring fingers 177 serving to exert a light downward pressure upon the sheets resting above the suction nozzles. Projecting upwardly from each rock shaft 176 is a rock arm 180 connected through a link lor pitrnan 181 with a rock arm 182 secured to the drop'roller rock shaft 10. By i reason of this connection it will be observed that when the drop rollers 8 are lowered into contactwith the under-feed rollers 6, the front gages 175 will be elevated out of the path of the sheets, and vice versa.- j

Projecting upwardly from one of the drop roller supporting rock arms 9, is a controlling rod 185, which passes througha guide strap or bracket 186, and is provided beneath the guide bracket with a stop collar 187. Pivcted at 188 upon a part of one of the aux- I whereas the movement of the pawl 140 into' engagement with the ratchet to 'cause the of the combing wheel when the sheet has been will withdraw'the latch arm 189 from the path offcollar 1,87 and allow the drop rollers to 4 operate under the control of their cam in the usual manner. The front ,gages are conf trolled in the same mannerby reason of the described connect-ion with'the drop roller mechanism.

'hen the rotary sectional clutchmech anisms are driven constantly in 4`one direction it sometimes happens that the-ratchetwheel 95 will bind so tightly upon thefcontrolling pawl 140, when the pawl is thrown into engagement for the purpose above explained,

1 that some diiiiculty 1s exper enced 1n disengaging these parts when` the mechanisms are reset.

In Figs. V15, 16 and 17 ot the drawings I `have shown a simple mechanism fo/r posi- --"-tively disengaging the controlling vpawl from combing wheel the ratchetwheel immediately after the has been elevated from. the pile ofwsheets. 4`In these. Figs. 15 vv16 and 17 ot the drawings, the section clut'h mech-` anism is the lsame as abokve describe-d, the same being driven by 'suitable gearing with the gear wheel 93. The ratchet wheel 95'on the section'of the shaft which moine ta- VThe following clearthe operation of my improved machine:

It being understood that a machine embody-` r-ily stopped is in this form of mechanism en, gag'ed by a controlling pawl 140 of 'slightly different shape for accomplishing the saine result as the controlling pawl above'referied to. .The pawl is connected as abovel del' scribed :y the rod or itman 145 'with the piston o, the suction cy inder.

Extending parallel with the sectional clutch shaft'91, 92, is a short rock shaft 210 journaled in a suitable .bearing in the machine frame. Secured to one end of this rock shaft 210' is a rock arm 211 carrying at its end a laterally projecting pin 212 which.

rests directly beneath the controlling 'awl Secured to the opposite end o fthe shortrock shaft-210 is a rock arm 213'Which projects downwardly toward the sectional 'clutch shaft to one side of th outer face of the gear wheel 93. A suiiicient space is allowed between rock arm 213 and the face of the gear wheel 93 to permit the normal free rotation of a series of detents or lugs 215 which project laterally from the face ofy the gear 93. The rock arm 213 is preferably ormed of the shape shown. From this constructionit .will be observed that when the controlling pawl 140 4engages the ratchet wheel 95 and arrests the shaftsectio'n 92,

the continued rotation of the shaft section 91,.

vnll cause the slip clutch to force said shaft section and thege'ar 93 to lthe left as shown in Fig. 15, which action will throw the detents or lugs 215 into the ath of the rock arm 213,

so that one of said ugs coming into engagement with rock arm `213vwill rock the shaft` 210 and cause the rock arm 211 to positively disengage the controlling pawl 140 from. the ratchet wheelv 95. This means for disengagmg ,thev awl from the ratchet wheelmay be alsoemp oyed in connection with the other form of the clutch mechanism in which the sectional clutch shaft is osc-illated forward ibo and backward, but the disengaging mechan:

lism is not vso necessary in said other form ofl 'the-clutch.

llxtending longitudinally of the machine, I

at each side is a rock shaft 200 journaled in bracket arms 201. extending down trom the auxiliarytrame pieces 12. At the forward end of each of these rock'shafts' is a rock arm 202 carrying at its upper end an antitriction roller 203, which -operatesin engagement with a face cam 204lieyed to the cam shaft 20. Each of. the rock .shafts 200 carries a horizontal roc-k arm which is adjustable longitudinally of the machine, and carries a weighted tail gripper 205 of the samev construction as fully set forth in my above named patent.

brief explanation will make ing, my improvements is provided with two sets of sheet combing mechanisms, each 1n- 'dependently controlled by a sheet actuated .suction device asidescribed, the machine is -Startedin operation with the combing Wheels resting' uponthe top ofthepile of sheets, the: combing wheels beingjdriven through the 4gears as above explained.' In this normal" 9 erative. position of themachin'e, the spring.

ve evating mechanisms for thecombers are held. out of" action by the restraining means above-described. 'In this position of the parts the-main controllingv valves -152--160are open (that is 'in the position shown in Fig` 11)',so thatthe air pump' or pumps will continually exhaust air through" t e systemv of piping the'air being supplied through the suction 7nozzles 155. Thetwo combing Wheelswilll continue .to operate until fth'e forward edge of the top 'sheet infront of one of thecombing Wheels is moved `forward suiiiciently to, close the ports or openings.

155a oflone of the suction nozzles 155. At the same time, or.immediatelythereafter, the edge of the sheet adjacent to the closed 4'suction nozzle 'will contact withl the front guide, Whichcoperates with said nozzle, the' suction of the nozzle upon the sheet also 'assisting inthe registering operation. Vleihen the o enings one of the nozzles .has been close the supply of air .from this source is cut oifl with the result that a partial vacuum will be formed in the. suction cylinder 147 with which the closed nozzle is in communil cation. upon the isto'n 146 to movethecontrolling pawl 140 or 140') into engagement with the 'controlling ratchet 95 to actuate the sectional clutch shaft mechanism `for tripping the releasing mechanism and allowing .the spring device to elevate the combiner wheel' behind the closed suction nozzle. lhis action Iis immediatelyv followed by the 'same operation at the other side of the machine with `the result -that both lcombing Awheels will be raised away from the pile and the top sheet, will be moved forward'in registered position. At the, same time that thepawl 1 40 is moved'intoengagement with the-ratchet Wheel 95, the controlling latch 189 is Withdrawn from engagement with the collar or ".gshoulderlS? of the controlling arm 185 to so L release the drop roller mechanism and thev front gages to vthe action of the main' controlling cam.y As each combing wheel is raised. from :the pile, the valve 1.52-115'0'is also automatically shifted toy shutoff comn munication between the air pump and the suction nozzles and tofautomatically break the suction in the nozzles yby opening up conn munication with the outside air through valve parts 160, 160b and 152, the controlling valve in this position being as shown in Fig. 10

of the drawings. As each valve is actuated for 'closing ofi the communication-With the pump, the pump is supplied with the necessary air to allow it to operate by the 'automatic action. of the valve 169. y

The suction in this. cylinder acts AsV each combing Wheel is raised from the pile and. the suction inthe suction nozzle is roken as explained, the spring 146a will move the piston 146 outwardlyfor disengagingpaw'l .140 vrom the ratchet. 1f the ratchet binds lthe pawl too tightly, the mechanism illustrated in Figs. 15, 16 and 17 yo the drawingsmay. be employed for disen- -gaging the pawl.,

Th drop roller mechanisms feed the regi'sf.

'tered sheet-fromthepile in the ordinary manner, vthe lowering of the VIdrop rollers causing the elevationor1v the front. gages by After the top sheet'has" completely left the reason of their vabove describedconnections.

pile the cams 58 will forcibly rock the sleeves.

50 to l permit the combing -Wheels to again fall intooperative engagement with the .top oi?l the pile of sheets, and-at the Sametime resetthe spring devices and' restrainingy .mechanisms and shift the. main controlling valves to their normal positions of operation'.

Having thus describedmy invention what I-claim as new and desire to secure by Letters Patent is: g

f- 1. The combination, 'in -a paper feeding' machine, of sheet` moving instrument,

' means controlling'the operation of the sheety moving instrument, aratchet wheel included I yin .said controlling means, a pawl adapted to l engage said ratchet Wheel, and sheet con-' trolled vsuction means for. actuating said PaWL j 2. The combination, in a paper-feeding machine, ,of la sheet -moving instrument,

'means controlling lthe operation of the sheet moving instrument,l a ratchet Wheel invcluded .in said controlling means, a pawl moving instrui'nent, a longitudinally movable throw-out shaft vincluded .in said conv trolling means, and sheet controlled suction -means adapted to effect the longitudinal movement of said shaft.

5. The combination, in apaper feeding machine, of a sheet i moving instrument adapted to be moved'into and out ofenga'gement with a sheet, means adapted to elevate the sheet moving instrument, means for restraining the action of the elevating means,

" for 'effecting the'longitudinal'movement of Athe throw-out shaft.

6. i The combination, in a .paper feeding inachine, of lva sheet moving instrument adapted to b'nioved into and out of engagement with as heet, means adapted-*to elevate said sheet moving instrument, means for restraining the action of the elevating means,

a longitudinally movable throw-out shaft adapted to release said restraining means, sheet controlled suction mechanism for l`effecting the longitudinal movement of the throw-out shaft, andan automatically operated valve for relieving the suction of said mechanism.

7.1l`he combination, in a paper feeding machine, of a sheet moving instrument adaptedto be' moved into and out of engagenient with a sheet, a spring device adapted to .elevate the sheet moving instrument, means vshaft adapted to release said. restraining means, t and sheet controlled pneumatic 'mecliamsm for effecting the longitudinal for'restraining the action of the spring device, a longitudinalbT movable throw-out movement of the throw-out shaft.` i

l2. lhe combination, in a paper feeding machine, of a sheet -nioving instrument V adapted-to be moved int-o and out of engagenient with a sheet, means adapted to elevate the sheet moving instrument,means for restraining the action of the elevating means, a

longitudinally novahle throvv-'outV shaft adapted' to release said restraining .nieans, sheet controlled pneumatic mechanism for effecting the. longitudinal movement of the `so throw-out shaft, and cam mechanism adapted to reset the restraining means.

9. The combination, i-ii a paper feeding machine, of a sheet moving instrument adapted t0 be moved into and out of engagement with a sheet, means adapted to elevate said sheet moving instrument, means for restraining the action of the elevating means. a longitudinally movable throw-out shaft adapted to releasel said restraining means, sheet controlled suction mechanism for effecting the longitudinal movement -vof the throw-out shaft, a relief valve for relieving the suction of the suction mechanism, cani mechanism adapted to move said instrument into engagement with the sheet and reset the restraining means, and means for operating said valve actuated b v the movements of said instrument into and out of operation.

"10. The combination, in a paper feeding machine, of a sheet moving instrument adapted to be moved into and out of engagement ivith a sheet, a spring device adapted to 'elevate the sheet moving instrument, means adapted to release said restraining means, and sheet controlled suction mechanism for actuating said pawl.

1l. The combination of a sheet moving instrunient. means for elevating the sheet moving instrument. a shaft section movable 'longitudinally and about its axis` means actuated b v the longitudinal movement of said shaft section for releasing the elevating a second shaft section movable about its axis, slip-clutch members secured upon the respective shaft sections, means acting on one of said shaft sections for moving both shaft sections about their axis, and sheet controlled pneumatic means "acting upon the other shaft section to arrest its movement about its axis.

12.' The combina-tion of a sheet moving instrument, means for controlling the operation of the sheet moving instrument, a shaft section movable longitudinally and about its axis, means actuated b v the longitudinal movement of said shaft section for actuating the controlling means. a second shaft section movable about its axis, slip-clutch members secured upon the respective shaft sections, means acting on one of said shaft sections for moving both shaft sections about their axis, a ratchet Wheel upon the other shaft section, a pawl adapted to engage saidratchet to arrest the movement .of said other shaft section about its axis, and sheet controlled suction means for actuating said paivl.

13. The combination of a sheet moving instrument, a spring device for elevating said sheet moving instrument, cani mechanism for lowering said instrument, a shaft section movable longitudinally and about -its axis,

.means actuated by thelongitudinal movement of said shaft section for releasing the spring device. a second shaft section iii-ov-v able about its axis, slip-clutch members secured upon the respective shaft sections.4 means acting on one of said shaft sections for moving both shaft sections about their axis.

and sheet controlled suction means acting upon the other shaft section to arrest its movement about its'axis.

l-l. Tliecombination of a sheet moving instrument. means for elevating the sheet niov- 4ing instrument, a shaft section niovable longitudinallv and about its axis, means actu`- ated blv the longitudinal movement of said shaft section foireleasing the elevating means, asecond shaft section movable about its axis. slip-clutch members secured upon the' respective shaft sections, a paivl and ratchet mechanism adapted to arrest the movement about its axis of one of said shaft sections, sheet. actuated suction means for moving said paul into engagement with said ratchet, and a spring' normally holding said pawl disengaged from the ratchet.

15. rThe combination of a sheet moving instrument, means for elevating the sheet moviio CII

ing instrument, including a pawl and ratchet .mechanism,` drop roller mechanism, a latchI restraining the drop roller mechanism, and a sheet actuatedpneumatic means controlling said pawl and said latch.

16. The combination of a sheet moving ininstrument, means for elevating the sheet moving instrument, a shaft section movable vlongitudinally and about its axis, meansactuated by the .longitudinal movement of said shaft sections for releasing the elevating means, a second shaft section movable about its axis, slipfclutch members secured upon the respective shaft sections, a Itoothed member moved by one' of said shaft sections, a pawl adapted to engage said toothed member to' arrest the movement of said shaft section about its axis, and sheet actuated suction means controlling said pawl.

' 18. The combination of asheet moving instrument, means for elevating the sheet4 moving instrument, a clutch mechanism y controlling the-elevating means, a toothed member carried by said clutch mechanism,

a pawl adapted to engage said toothedmember to causethe operation of the clutch mechanism, and'sheet actuated suction means controllingsaid pawl, and including a suction relief nozzle supported in the path of sheets.

19. The combination of a sheet moving instrument, means controlling the operation of the sheet moving instrument, including a ratchet wheel, a pawl adapted to engage lsaid ratcliet'wheel, a suction cylinder having suitable communication with air exhausting means, a suctionl nozzle supported m the path of the sheets land communicating withv said suction cylinder, and a piston operating in said cylinder and suitably connected with said pawl.

20.. The combination of a sheet 4 instrument, means controlling the o eration of the sheet moving instrumen@ inc uding. a

t ratchet wheel and a pawl adapted to engage -said ratchet wheel, a suction cylinder lhavingsuitable communication with air exhausting means, a suction relief nozzle supported in the path of the sheets and communicating with said suction cylinder, a piston'operating in said cylinder andsuitably connected with said pawl, and an automatic suction conftrolling valve. i y Y 21.- 'The combination of a sheet -moving instrument,` means controlling the operation ratchet wheel, a pawl movingv of the sheet moving instrument including a ratchet wheel, a pawl adwagpted to engage said ratchet wheel, a suction cylinder having suitable communication with air exhausting means', a,` suction nozzle supported in the path of the sheets and communicating with said suction cylinder, drop roller delivery 'mechanism, a latch controlhng the Aoperation of the drop roller mechanism, and a piston operating in said cylinder and suitably connected with said pawl and with said latch.

22.` The combination of a' sheet moving instrument, means controlling the operation lof the sheet moving instrument, a ratchet and a pawl included in the controlling means,

sheet controlled suction means for actuating said pawl and having communication with `a suitableair pump, a vvalve 1n said ,com-

munication between the suction means and air pump, and means actuated by the movement of. the instrument -into and out of l operation for operating said valve.

23.1Tlie combination of a sheet moving instrument, means for controlling the movement of the sheet'moving instrument into and out of operation, alongitudinally movable throw-out shaft included in said trolling means, sheet controlled suction` means adapted to effect the longitudinal movement of said shaft, a suitable air. pump in communication with` the suction means,

a valve said communication between the suction means and air pump, and means actuated by the movement of the instru-- ment into and out ofoperationzfor operating l said valve.

24. The combination of a'sheetlnoving instrument, means for raising and ,lowering -the sheet moving instrument, controlling means including a ratchet and a pawl, sheet controlled suction means for actuating said pawl, said suction means having communication with a suitable air pump, a valve in said communication between the suctionmeans and air pump, and ,means actuated 'by the elevation and lowering of the instrument for operating said valve.

25. The combination of a sheet moving instrument, means 'controlling the operation of the sheet moving instrument including a for actuating said pawl,

drop roller deliverv mechanism,

a controlling arm connected with the drop rollers, a controlling latchI actuated 4by the 'sheet controlled means and adapted to engage saidcontrolling arm.

26. The combination of a sheet moving instrument, means controlling the operation of the sheet moving instrument including a ratchet wheel, a pawl adapted to engage said ratchet Wheel, sheet controlled suction means for actuating said pawl, drop roller delivery mechanism, a controlling arm connected with the drop rollers, and a latch'connected `1 3() adapted to engage said ratchet wheel, sheet controlled means.

' controlling arm.

arm, suitable front-gui es, and connections nately, and sheet controlled suction means l with said pawl and adapted'to engage said 27 The combination of a sheet moving instrument, sheet controlled means controlling the operation of the sheet moving instrument, drop roller delivery mechanism., a controlling arm connected with the drop rollers, a shoulder on said controlling arm, and a latch actuated by the sheet controlled means and adapted to engage the shoulder on said controlling arm.

28. The combination of a sheet moving instrument, means controlling the operation of the sheet moving instrument including a ratchet wheel, a pawl adapted to engage said ratchet Wheel, sheet controlled means for actuating said pawl, drop roller delivery mechanism, a controlling arm connected with the drop rollers, a latch connected with said pawl and adapted to en age said controlling between said front guides and the drop roller mechanism.

29. The combination of a sheet moving instrument, sheet controlled suction means controlling the operation of the sheet moving instrument and including a suction nozzle arrangedv in the path of sheets, suitable front guides in operative relation to the sheets, and connections between said front guides and the controlling means;

3U. The combination of a sheet moving instrument, sheet controlled suction means controlling the operation of the sheet moving instrument, said suction means including a suction nozzle arranged in the path of sheets drop roller delivery mechanism, suitable front guides in operative relation to the sheets, and connections between said front guides, the drop roller mechanism and saidl controlling means.

31. The combination of a sheet moving instrument, suitable drop roller mechanism, suitable front guides, rock arms connectedV .respectively with the drop rollers andiront guides for causing them to operate altercontrollingthe operation of the sheet moving instrument and the connected drop rollers and front guides.

The combination of a sheet moving instrument, means controlling the o )eration of the sheet moving instrument, including a ratchet wheel, apawl adapted 'to engage said ratchet wheel, sheet controlled means for actuating said pawl, and means actuated by the engagement of the pawl with the ratchet wheel for,` disengaging the pawl from the ratchet Whelel.

33. The combination of a sheet moving instrument, means controlling the o eration of the sheet moving instrument, including a ratchet Wh'el, a pawl adapted to engage said ratchetiwheel, sheet controlled means for actuating safdrpawl, a rotatable detent, a rock shaft carrying two rockarms, one of which j .is ada ted to be engaged by said detent, and

the ot er of which is adapted to engage said -pawl for disengaging the pawl from the ratchet wheel, and means actuated by the arrest ofthe ratchet wheel by the'pawl for moving the detent into position to engage said rock arm.

34. The combination of a sheet moving instrument, means controlling the 'operation of the sheet moving instrument, including the ratchet wheel, a pawl adapted to engage said ratchet wheel, sheet controlled means for actuating said pawl, a longitudinally movable rotary throw-out shaft, a plurality of detents mounted upon said shaft, means actuated by the engagement of said pawl with said ratchet for causing the lon itudinal movement of said shaft, a rock sha t carrying a rock arm adapted to engagesaidpawl, and. a second rock-arm lmounted upon said rock shaft with which said detents are adapted to engage when the throw-out ,shaft is moved longitudinally.

A. C. HAMMOND., G. v. S. Lnrron. 

